Drilling apparatus.



No. 665,399. v Patented lan. 8, I90I.

A P. BROADBDKS.

DRILLINGAPPABATUS. (Appximion and ,191?. 1g, moo.) (No Model.)

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DRILLING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 665,399, dated January8, 1901.

Application filed January ll, 1900. Serial No. 1,043. (No model.)

To all whom t may concern:

Be it known that I, PETER BRoADBooks, a citizen of the United States,residing at Batavia, county of Genesee, and State of New York, haveinvented a certain new and useful Improvement in Drilling Apparatus, ofwhich the following is a specification.

My invention relates to a new and useful improvement in drillingapparatus, and has for its object to so construct such an apparatus asto adapt it for use as a lathe-drill or a brace-drill.

With these ends in view this invention consist-s in the details ofconstruction and combinations of elements hereinafter set forth and thenspeciiically designated by the claim.

In order that those skilled in the art to which this inventionappertains may understand how to make and use the same, the constructionand operation will noW be described in detail, referring to theaccompanying drawings, forming a part of this specification, in which-Figure 1 is a side elevation of my improvement adjusted for use as alathe-drill with the yoke and flexible connection removed; Fig. 2, asimilar view showing the device adjusted as a brace-drill; Fig. 3, aplan view of Fig. 2, and Fig. 4 a section at the line w of Fig. 2.

In carrying out this invention I provide a base A, which is providedwith the flange B in order that it may be bolted to a bench or othersuitable surface, and likewise a baseblock C is bolted to the bench,each of these members having an opening therethrough for the receptionand guidance of the sliding bar D. The sliding bar has adj ustablyattached to its outer end the screw-block E by means of the set-screw F,and the operating-screw G is threaded through this block and is providedWith the hand-Wheel H for its manipulation. The screw-block has ribs G',forming shoulders, between which a yoke to be hereinafter described issecured. This purpose of the shoulders is to more rigidly hold the yokeand relieve the strain on the yokes securing-bolt.

I is a spindle which passes through the operating-screw, the latterbeing made hollow for that purpose, and a chuck J is carried by theinner end of the spindle and adapted to hold the drill K. The outer endof the spindle has attached thereto the collarL by means of theset-screw M, the collar being adapted to receive the crank-handle N,bymeans of which the spindle, and consequently the drill, may be revolved,and this revolving of the spindle will not affect the operating-screw.

A face-plate O is formed with the base A and acts as a surface againstwhich the work may be placed when the drill is to operate thereon. Aset-screw P is so located as to hold the sliding bar D in any desiredadjustment, so that the head of the drill may be adj usted for variousthicknesses of material.

In operation the work is first placed against 'the face-plate and thepoint of the drin brought in contact therewith by the manipulation ofthe hand-Wheel H, after which the revolving of the crank-handle N willrevolve the drill, and a continued feeding forward of the drill by themanipulation of the handwheel will produce the desired result.

To adjust the device for use as a bracedrill, a yoke R is adapted to itover the screwblock and be secured thereto by the bolt S. This yokecarries the arms T and T', the outer end of the former being adapted toreceive one end of the chain U, while the arm T is slotted and providedwith a pin V, whereby the chain may be adj ustably attached thereto. Inusing the drill in this form the chain is passed around the work(represented by the cylinder W) and the drill brought in contact withsaid work by the manipulation of the hand Wheel H, after which thedrilling is accomplished by the revolving of the crankhandle M, in whichcase the screw F may be utilized as a leveling-screw, as shown in Fig.2.

Having thus fully described my invention, what I claim as new and usefulis- In a drilling device, a screw-block having ribs on its top formingshoulders, a yoke embracing the top of the block and lying between andengaging the ribs, a bolt for retaining the yoke in place, a flexibleconnection attached to the yoke and adapted to embrace the material tobe operated upon, a hollow screw threaded in the block and adrill-spindle j ournaled in the screw, substantially as described.

In testimony whereof I have hereunto afxed my signature in the presenceof two subscribing witnesses.

PETER BROADBOOKS.

Witnesses:

G. H. HOLDEN,

FRANCIS L. HAwEs.

IOO

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